Automatic bell-ringing device.



H. W. GROSS.

AUTOMATIC BELL BINGING DEVICE:

APPLICATION FILED AUG. 7, 1911.

1,046,775. A Patented Dec. 10, 1912.

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H. W. GROSS.

AUTOMATIC BELL RINGING DEVICE.

APPLICATION FILED AUG. 7, 1911.

1,046,775. Patented Dec. 10, 1912.

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nnnscnnn w. (moss, or CHICAGO, ILLINOIS, :ASSIGNOR or cum-11113.1) ToJOHN E.

. WARP, or cnIcAoo, ILLINOIS.

Aurom'rIc IBELL-RINGING DEVICE. v

To all whom it may concern Be it known that I, HERSCBIEL W. Games, acitizen of the United States, and, a. resident of the city of Chicago,county of Cook, and State of Illinois, have invented certain new anduseful Improvements in Automatic Bell- Ringing Devices, of which thefollowing is] a specification.

My invention relates to devices for efiecting automatic bell ringing,and more-specifically to that class thereof designed espe cially foremployment upon locomotives.

The object of my invention is the production of a device of thecharacter mention'ed whichwill be of improved construction and ofgreatetficiency in operation.

Ether objects will appear hereinafter.

With these objects in view my invention consists in the combinations andarrangements of parts hereinafter described and claimed.

The invention will be best understood by reference to the accompanyingdrawing forming a of this specification, and in which,

Figure 1 is a side elevation of a bell ringi g device embodying myinvention, Fig. 2 is central vertical section of the main operativeparts of the device, Fig. 3 is a transverse section taken on line w-rnof Fig. 2,

sis a transverse section taken on line 31 1 or Fig. 2.

The preferred form of construction as illustrated in the drawingscomprises a portion 1 of a locomotive boiler upon which is mountedthebell bracket 2 in which is mounted for oscillation the bell supportor hanger S. the hanger 3 and is adapted to oscillate herewith. Securedto one extremity of the support or hanger 3 by means of a set screw is acrank 5 through the medium of which aid support and the bell i may beoscila.ed. Arranged adjacent the bracket 2 and n osed directly below thecrank 6 is an upight cylinder 7, there being securing lugs cast integralwith said cylinder which are secured by means of screws Q to asupporting bracket 10 which is approximately l..-shaped in form andsecured to the top of the boiler 1 by means of a pair of screws 11.@perating within the cylinder 7 is a piston 12 carried by a piston rod13, said piston rod projecting through the upper head of said cylinderinto an axial The hell 4 is rigidly secured to' shown in Fig. 2.

Specification of Letters Patent. Eatented Dec, 10, 1912.. Applicationfiled August 7, 191i. Serial No. 642,724.

guide chamber 14 formed integral with said cylinder head In order toprevent leakage past the piston rod 13 a packing gland 15 is providedand held. in position by'a cup 16} which is. screwed upon the threadedperiphery of the chamber 14.. The upper end of the piston rod 13 isthreaded and screwed into an internally threaded block 17 as shown inFig. 2. In this manner an adjustable connection is formed between thepiston rod 13 and the block 7, any

'desiredadjustment being secured by means of a locknut 18 disposed belowthe block 17. The crank 6 is operatively connected with the block 17 bymeans of a connecting rod 18, the latter being suitably pivoted at eachend thereof. The construction is such that reciprocation of the piston12 and block 17 effects oscillation of the crank 6 and consequently thehell 4 which is arranged in rigid relation therewith. ?rovided in thehead 7 ofth'e cylinder 7 is a plurality of perforations 19 by means ofwhich the ingress and egress of air to and from the cylinder 7. isreadily permitted.

In order to limit the upward movement of the piston rod 13 and theoscillation of the bell caused thereby a helical spring 20 surroundingsaid piston rod is interposed between the piston 12 and the head 7', thelength thereof being approximately as shown in Fig. 2. The spring 20causes the piston 12 to stop gradually and precludes the possibility oiany shock or noise. Also with this construction the boil t is preventedfrom making a complete rotation whichis a very objectionable fault withbell ringers of ordinary construction. It is well known that with bellringers as ordinarily constructed it is possible for the bell to bewhirled or rotated at such aspeed that operation of the hammer isprevented and hence a sounding of the bell also reven'ted, this notinfrequently resulting in disaster. The lower end or" the cylinder 7 isprovided with an extension cylinder 21 there being a circular opening 22between the main and extension cylinders. The periphery of the lower'endof the extension cylinder 21 is threaded and screwed thereto is aninternally threaded cup 23 by means or which a collar 24: and a packinggland 25 is rigidly secured in position as The collar 24 is seatedagainst a shoulder 26 and serves as a seat for the lower end of ahelical compression spring 27 provided within the extension cylinder 21.The packing gland 25 together with the collar 24 effectually preventsloss of compression in both of the cylinders 7 and'21. Axiallarrangedinthe cup 23 which is rovidedwit a central opening is acylindrlcal valve 28 having aconlcal valve head 29 at the upperendthereof. Formed integral with the valve 28 and extending upwardlytherefrom through the opening 22 between l the cylinders 7 and 21 is atriangular shaped -.stem 30 theupper surface of which serves tometrically opposlte radially projecting pins 31 provided at. the upperend of the valve 28..7The general construction and the calibration ofthe spring 27 is such that the pisten 12 will'come to a full stop beforeit 1. reaches the lower end of the cylinder 7 as shownin Fig. 2.Simultaneously with the contact of the piston 12 with the valve 28 thevalve head 29 is unseated from the valve seat .32,thus establishincommunication between the .two cylinders .and 21.

The extension cylinder 21 is connected .with a source of compressed airor other fluid by means of a pipe 33 which is tapped into one side ofthe cylinder 21 as shown..-

In operation when it is desired to operatethe hell a valve (not shown)inthe pipe 33 j I is opened which efl'ects the-delivery of the.compressed fluid to the extension'cylinder 1 .shown in Fig. 2 the 41 45.

21. The valve 28. bein in 'the'position' as uid now, contained withinthe cylinder 21 will flow through the ,:.opening 22 and exert an n wardpressure {upon the lower side of the plston 12. During the upwardmovement of the piston 12 thebell 4 will. obviously be oscillated either15 02111 one direction or the other due to the con- ..nectingmechanismbetween said piston and -.,.the-bell hanger ,5. The bell 4 willbe oscili inbefore explained. After the piston 12 has v lated to such anextent that it'will assume one'of the dottedline positions as shown inFig. 1' whereupon it will stop oscillating due {to the contactof thecompression spring 20 withthe under side of the cylinder head 7', thestopping action. being gradual as heremoved upwardly a certain distancea port 34 wh ch leads to atmosphere and provided in glone side of thecylinder 7 is uncovered by s a 1d,,p1 ston and ermits the charge ofcom.-

,pressed fluid actlng thereon to escape. The

piston 12 will not immediately stop, how-.

ever, due to the momentum of the bell and the connecting medium, saidpiston continll- .ing to move until stopped by the contact of the spring20 with the head 7 as aforesaid. When the piston 12 begins to ascend thevalve 28 follows the same until the valve head 29 is seated upon thevalve seat 32, whereupon the supply of compressed fluid is cut oilfromfthe cylinder 7. The valve head 29 will not again open untilthe'piston 12 descends following its upward movement and contacts withthe stem 22. The valve head 29 will now be unseated since thepision 12is returned by the gravity of the op erating parts and the bell-4'which'tends to assume the stable normal position as shown in Fig. 1. Since thepiston 12 is now exposed to the pressure of the. fluid contained withinthe cylinder 21 it will operate as before. In this manner the bell 4will continue to oscillate and ring until the valve in the pipe 33 isclosed. V

The construction as set forth is simple and economical, hence may bemanufactured at a low cost, and the same because of its simplicity isnot. susceptible to readily becoming inoperative. ,The parts areassembled for readyremoval if desired to eflect cleaning, the valve 28for instance being adapted to be readily removed by removal of the cup23. The adjustable con-- nection between the block 17 and the piston rod13 aflords means for readily and gradually adjusting the throw oramplitude of oscillation of the crank 6 and hence the bell with whichthe same is connected. The

parts of the construction are exceedingly strong and durable I and areof high elliciency in operation.

While I have illustrated and described the preferred form ofconstruction for carrying my invention, into effect, this is 'capa- Ible of variation and modification without departing from the-spirit ofthe invention. 3

I therefore do not wish to be limited to the precise details ofconstruction as setforth, but desire .to avail myself of such variationsand modifications as come within the scope of the appended-claims.

Having described my invention what I claim as new and desireto secure byLetters Patent is:

cylinder and an axially arranged cylinder extension, a piston in saidpiston cylinder; a valve stem in said cylinder extension; a partitionbetween said piston cylinder and cylinder extension having a circularopening therein and provided with a valve seat formed adjacent saidopening and within said cylinder extension, a portion of said valve stembeing polygonal in cross section and projecting through said openinginto the lower portion of said piston cylinder; .a val e headcn saidvalve stem'adapted 1.- In a locomotive bell ringer, a piston to engagean annular valve seat; a helical spring on said piston adapted to limitthe upward movement thereof; a helical spring on said valve stem adaptedto hold the valve head normally closed; an exhaust port in the lowerportion of said piston cylinder; means for supplying fluid underpressure to said cylinder extension; and an operative connection betweensaid piston and the locomotive bell, substantially as described.

2. In a locomotive bell ringer, a cylinder having a piston and anaxially arranged cylinder extension having a circular opening into thelower portion of said piston cylinder; a valve head in said chamberhaving a polygonal valve stem; a nut in said chamber and cylinderextension; a valve seat within said cylinder extension and surroundingsaid opening, said valve stem passing through said opening and intopiston cylinder,

the lower portion of said rovided with a helical 'spring on sand valvehead cylinder adapted to limit the upward movement thereof; an exhaustport in said piston cylinder; and an adjustable operative connectionbetween said piston and the locomotive bell, substantially as described.

In testimony whereof I have signed my name to this specification in thepresence of two subscribmg witnesses.

HERSCHEL W. GROSS. Witnesses: I

JOSHUA R. Porrs, W. C. SMITH.

